he discovery may lead to new treatments and perhaps even a total cure in the future, bringing relief to as many as 5 million Americans thought to have the disease. To solve the Fibromyalgia mystery, researchers zeroed in on the skin from the hand of one patient who had a lack of the sensory nerve fibers, causing a reduced reaction to pain. They then took skin samples from the hands of Fibromyalgia patients and were surprised to find an extremely excessive amount of a particular type of nerve fiber called arteriole-venule (AV) shunts.